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J. E. FENNER.

STOVE PIPE DAMPER.

No. 385,923. Patented July 10, 1888. L i, w. 1]

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JAMES E. FENNER, OF DELPHI, NEW YORK, ASSIGNOR OF ONE-HALF TO HENRY G. DIXON, OF SAME PLACE.

STOVE-Pl PE DAM PER.

SPECIFICATION forming part of Letters Patent No. 385,923, dated July 10, 1888,

Application filed February 17, 1888. Serial No. 264.424.

To aZZ whom it may concern:

Be it known that I, JAMES E. FENNER, of Delphi, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in StovePipe Dampers, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention consists, essentially, in the IO combination and arrangement of a plurality of diaphragms pivoted horizontally across the interior of the stovepipe at intervals of its length, and couplings connecting the alternate diaphragms at one side of the axis thereof, 5 and connecting the intermediate diaphragms at opposite sides of the axis thereof, so that in turning the said diaphragms they become tilted successively in opposite directions from each other, and form a sinuous passage for the products of combustion, which causes the latter to be retarded in said passage, and at the same time to more effectually impinge the sides of the stove-pipe, and thus prevent the escape of the heat through the exit-pipe, pro- 2 duce a greater radiation of the heat from the stove, and consequently effect a great saving of fuel.

The invention is fully illustrated in the annexed drawings, in which- Figure 1 is alongitudinal section of a stovepipe equipped with my improved damper. Fig. 2 is a detached side view of the damper taken in a plane at right angles to that of Fig. 1; and Figs. 3 and 4. are transverse sections respectively on lines 00 x and y y, Fig. 1.

Similar letters of reference indicate corresponding parts.

A represents a joint or section of a stovepipe to which my improved damper is at tached. This damper consists of a plurality of plates or diaphragms, a a a, pivoted across the interior of the said pipe-section at proper intervals of the length thereof, and coupled together so as to turn conjointly, said couplings consisting of links or metallic straps c c c,

which connect the alternate diaphragms a a at one side of the axis thereof, and connect the intermediate diaphragms at the opposite side of the axis thereof, and thus by turning the said diaphragms on their axis they are tilted successively in opposite directions from each other, and thereby form a serpentine or sinu- (No model.)

one passage for the products of combustion,

as indicated by arrows in Fig. 1 of the drawings, the said passage being most tortuous when the diaphragms are at right angles to the axis of the pipe section, as indicated by dotted lines in Fig. 1 of the drawings, inasmuch as the diaphragms reach alternately from opposite sides of theinterior of the pipesection part way across the same.

By turning the diaphragms so as to stand parallel with the axis of the pipe, straight and direct passages are formed longitudinally through the pipe, and thus the necessary draft can be obtained when first starting the fire in the stove. The shaft of one of the diaphragms is extended through the side of the pipe-section and formed or provided with a suitable handle, h, by which to turn the diaphragms.

In order to facilitate the attachment of the described damper to the pipe A, I provide a separate frame, consisting chiefly of two parallel plates, 19 p, to which the diaphragms are pivoted, said plates being adapted to enter into the pipe-section A and lie closely against the sides thereof, and are sustained therein by the handle 7a, extending through a hole in the side of the pipe-section.

\Vhat I claim as my invention is The combinatiomwith the stove-pipe section A, of the plates pp, secured lengthwise and respectively at opposite sides of the interior of said pipe-section, disconnected from each other to leave a single passage in the pipesection, a series of diaphragms, a a, pivotedv independently of each other to the said plates at intervals of their lengths, couplings c 0, connecting the alternate diaphragms at one side of the axis thereof and connecting the intermediate diaphragm at the opposite side of the axis thereof, and the adjusting-rod h, attached to one of said diaphragms, substantially as described and shown.

In testimony whereofI havehereunto signed my name, in the presence of two witnesses, at Syracuse, in the county of Onondaga, in the State of New York, this 13th day of February, 1888.

JAMES E. FENNER. [n s.]

W'itnesses:

O. L. BENDIXON, A. AVERY HOWLETT. 

